Welcome to the North American Subaru Impreza Owners Club Wednesday July 30, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Service & Maintenance

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 01-12-2010, 12:17 PM   #1
krazy
Scooby Specialist
 
Member#: 56400
Join Date: Mar 2004
Chapter/Region: SCIC
Location: Southern California
Vehicle:
04 Subaru STi
JBP

Question Does your AC compressor clutch ALWAYS spin freely?

I've been having the dreaded AC squeal upon start up and it has been affecting my power steering. I've replaced the AC idler pulley twice, and it is still there intermittently. Without the AC belt the car is PERFECT. No steering wheel shudder, no squeak, squeal or hiss. So the culprit is the AC compressor. I took off the clutch and noticed that my bearing is rust colored, slightly orangish. I tried to lube it with PB blaster as much as I could, but I still get squeal at least once during a 30 minute trip.

Steering shudder is the there only at certain times, and when the AC clutch engages there is a hiss or grinding noise. AC still blows cold.

My theory: Air pocket in the refrigerant lines causing the compressor difficulty to engage at certain times (i.e. morning when the refrigerant has been sitting in the lines over night, or when the car is compressing the AC).

Or it could be that the bearing is just failing, and causing intermittent squeals.

So, does the clutch ALWAYS spin free when its not engaged? or does it have spots where it seems like its having trouble compressing liquid?


Thanks!
* Registered users of the site do not see these ads.
krazy is offline   Reply With Quote
Old 01-12-2010, 12:32 PM   #2
BumbleBeeTuna
Scooby Newbie
 
Member#: 234879
Join Date: Jan 2010
Chapter/Region: South East
Location: Cumming GA
Vehicle:
2003 WRX WAGON
PSM

Default

Your AC compressor should spin freely without the AC clutch engaged, for example with the defrost and A/C switches turned off. If the pulley does not spin free all the time then your compressor bearing could be wearing out. The front clutch will be hard to spin but if you spin the actual pulley where the belt rides it should spin free. Hope this helps.
BumbleBeeTuna is offline   Reply With Quote
Old 01-12-2010, 12:41 PM   #3
krazy
Scooby Specialist
 
Member#: 56400
Join Date: Mar 2004
Chapter/Region: SCIC
Location: Southern California
Vehicle:
04 Subaru STi
JBP

Default

Quote:
Originally Posted by BumbleBeeTuna View Post
Your AC compressor should spin freely without the AC clutch engaged, for example with the defrost and A/C switches turned off. If the pulley does not spin free all the time then your compressor bearing could be wearing out. The front clutch will be hard to spin but if you spin the actual pulley where the belt rides it should spin free. Hope this helps.
Yea, I've noticed that the front clutch is hard to spin. I dont think theres a way to check if the compressor spins freely if the belt is on though. I wonder if anyone has attempted to rebuild the clutch housing.
krazy is offline   Reply With Quote
Old 01-22-2010, 11:52 PM   #4
BumbleBeeTuna
Scooby Newbie
 
Member#: 234879
Join Date: Jan 2010
Chapter/Region: South East
Location: Cumming GA
Vehicle:
2003 WRX WAGON
PSM

Default

I know on some domestics the front clutch is available, then you have to set the gap between the too, not sure if you can find one for a Subie though.
BumbleBeeTuna is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
AC Compressor Clutch Replacement? DriftinS14 Service & Maintenance 32 11-20-2013 11:48 AM
WTB: 1995 AC Compressor Clutch awaken101 Private 'Wanted' Classifieds 1 04-25-2009 09:04 AM
AC compressor clutch / compressor smeghead Private 'Wanted' Classifieds 11 10-01-2007 12:53 PM
AC compressor has trouble spinning.. BlackPearlX Service & Maintenance 12 08-02-2007 02:29 PM
Can you "oil" your AC compressor? geepondy Service & Maintenance 3 07-22-2004 09:44 PM


All times are GMT -4. The time now is 04:18 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.